CVE-2009-4639
The av_rescale_rnd function in the AVI demuxer in FFmpeg 0.5 allows remote attackers to cause a...
The av_rescale_rnd function in the AVI demuxer in FFmpeg 0.5 allows remote attackers to cause a denial of service (crash) via a crafted AVI file that triggers a divide-by-zero error.
Exploit likelihood
What each source reports
NVD Score used
The av_rescale_rnd function in the AVI demuxer in FFmpeg 0.5 allows remote attackers to cause a denial of service (crash) via a crafted AVI file that triggers a divide-by-zero error.
- Record
CVE-2009-4639- CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:N/A:P - Weakness
- CWE-189
- Updated
- 2026-11-02
CVE List No score
The av_rescale_rnd function in the AVI demuxer in FFmpeg 0.5 allows remote attackers to cause a denial of service (crash) via a crafted AVI file that triggers a divide-by-zero error.
- Record
CVE-2009-4639- Updated
- 2026-11-02
EUVDEUVD-2009-4604 No score
The av_rescale_rnd function in the AVI demuxer in FFmpeg 0.5 allows remote attackers to cause a denial of service (crash) via a crafted AVI file that triggers a divide-by-zero error.
- Record
EUVD-2009-4604- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4x29-4984-2qcp No score
The av_rescale_rnd function in the AVI demuxer in FFmpeg 0.5 allows remote attackers to cause a...
The av_rescale_rnd function in the AVI demuxer in FFmpeg 0.5 allows remote attackers to cause a denial of service (crash) via a crafted AVI file that triggers a divide-by-zero error.
- Record
GHSA-4x29-4984-2qcp- Updated
- 2026-11-02
OSV No score
The av_rescale_rnd function in the AVI demuxer in FFmpeg 0.5 allows remote attackers to cause a denial of service (crash) via a crafted AVI file that triggers a divide-by-zero error.
- Record
CVE-2009-4639- Updated
- 2026-11-02
OSVDEBIAN-CVE-2009-4639 No score
The av_rescale_rnd function in the AVI demuxer in FFmpeg 0.5 allows remote attackers to cause a denial of service (crash) via a crafted AVI file that triggers a divide-by-zero error.
- Record
DEBIAN-CVE-2009-4639- Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2009-4639 is a medium vulnerability (CVSS 4.3) in Ffmpeg, published February 10, 2010. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.99%, the 87th percentile. Fixed in ffmpeg 7:2.4.1-1.
References
mandriva.com/security/advisories?name=MDVSA-2011:088
secunia.com/advisories/36805
securityfocus.com/bid/36465
roundup.ffmpeg.org/roundup/ffmpeg/issue1240
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scarybeastsecurity.blogspot.com/2009/09/patching-ffmpeg-into-shape.html
vupen.com/english/advisories/2011/1241
ubuntu.com/usn/USN-931-1
nvd.nist.gov/vuln/detail/CVE-2009-4639
github.com/advisories/GHSA-4x29-4984-2qcp
security-tracker.debian.org/tracker/CVE-2009-4639